CVE-2015-7973 — Authentication Bypass by Capture-replay in Freebsd

CWE-254CWE-294 — Authentication Bypass by Capture-replayCWE-119 — Improper Restriction of Operations within the Bounds of a Memory BufferCWE-20 — Improper Input ValidationCWE-200 — Sensitive Information ExposureCWE-287 — Improper AuthenticationCWE-399CWE-400 — Uncontrolled Resource Consumption24 documents11 sources
Severity
6.5MEDIUMNVD
EPSS
8.6%
top 7.56%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
NTPFreebsdDebian NTP+2 more
Timeline
PublishedJan 30
Latest updateMay 13

Description

NTP before 4.2.8p6 and 4.3.x before 4.3.90, when configured in broadcast mode, allows man-in-the-middle attackers to conduct replay attacks by sniffing the network.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:HExploitability: 2.2 | Impact: 4.2

Affected Packages6 packages

▶NVDntp/ntp4.3.0 — 4.3.90+2
▶debiandebian/ntp< ntp 1:4.2.8p7+dfsg-1 (bullseye)
▶NVDfreebsd/freebsd10.0 — 10.1+3
▶Debianntp/ntp< 1:4.2.8p7+dfsg-1
▶Ubuntuntp/ntp< 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10+1

Also affects: Ubuntu Linux 12.04, 14.04, 16.04

🔴Vulnerability Details

3
GHSA
GHSA-rjg7-f2g5-4qhq: NTP before 4↗2022-05-13
▶
OSV
CVE-2015-7973: NTP before 4↗2017-01-30
▶
OSV
ntp vulnerabilities↗2016-10-05
▶

📋Vendor Advisories

18
CISA ICS
Siemens TIM 4R-IE Devices↗2021-04-13
▶
Ubuntu
NTP vulnerabilities↗2016-10-05
▶
Palo Alto
PAN-SA-2016-0019 NTP Vulnerabilities↗2016-08-15
▶
Cisco
Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: January 2016↗2016-01-28
▶
BSD
FreeBSD-SA-16:09.ntp: Multiple vulnerabilities of ntp↗2016-01-27
▶

💬Community

2
Bugzilla
CVE-2015-7973 ntp: replay attack on authenticated broadcast mode↗2016-01-20
▶
Bugzilla
CVE-2015-7974 CVE-2015-8138 CVE-2015-7973 CVE-2015-7975 CVE-2015-7976 CVE-2015-7977 CVE-2015-7978 CVE-2015-7979 CVE-2015-8158 CVE-2015-8139 CVE-2015-8140 ntp: various flaws [fedora-all]↗2016-01-20
▶